Rhizome of Oriental Waterplantain Classic Formulas … Natural Herb Library

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Promotes urination and leaches out dampness ... Ze Xie is a classic herb for edema, inhibited urination, and water retention patterns.
Drains damp-heat from the lower burner ... it is used for painful or turbid urination and damp-heat accumulation affecting the urinary tract.
Drains ministerial fire and descends turbid dampness ... traditional use extends to dizziness or head heaviness when phlegm-damp and lower-burner turbidity are part of the pattern.

Wu Ling San ... classic formula for water retention, edema, and urinary difficulty in which Ze Xie is the leading draining herb.
Zhu Ling Tang ... used when fluid damage and urinary irritation coexist, with Ze Xie helping to open water pathways.
Liu Wei Di Huang Wan ... Ze Xie drains excess turbidity and balances the richer tonic ingredients in a famous Kidney-yin formula.

Traditional herbology describes Ze Xie as sweet, bland, and cold, entering the Kidney and Bladder to promote urination and drain dampness.
Its classic personality is downward-draining and non-tonifying, even when it appears inside large tonic formulas.